[c-nsp] Mpls Troubleshooting Question

[ChrisSerafin]

HQ Site think the traffic is local due to subnet differences?

Rocker Feller wrote:
> Hi,
>
> I work in an ISP environment and in it I found developed MPLS delivering ip
> vpns.
>
> There is one client with 5 branches.
>
> All work fine except for 1.
>
> This is the scenario.
>
> The default route is derived from the corporate office (HQ). Its network
> range is 172.16.0.0/16
>
> Say branch with problem is branch Z ip range is 172.16.7.0/24
>
> >From Z Lan I can ping HQ Lan ok
>
> ping 172.16.1.1 source 172.16.7.1
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 172.16.1.1, timeout is 2 seconds:
> Packet sent with a source address of 172.16.7.1
> !!!!!
> Success rate is 100 percent (5/5), round-trip min/avg/max = 24/29/36 ms
>
> >From HQ I cannot ping Z apart from reaching the Z router.the lan
>
> ping 172.16.7.1
> PING 172.16.7.1 (172.16.7.1) 56(84) bytes of data.
> 64 bytes from 172.16.7.1: icmp_seq=0 ttl=253 time=19.8 ms
>
> Any other connections are dropped from branch Z router
>
> A trace reveals packets are dropped from the main MPLS PE router.
>
> The PE router can reach the CE router but not any pc behind it.
>
>
> Your input appreciated
>
>
> Regards
> Rocker
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